Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Low-carbon alkane dehydrogenation catalyst as well as preparation method and application thereof

A dehydrogenation catalyst and low-carbon alkane technology, which is applied in catalyst activation/preparation, hydrocarbons, hydrocarbons, etc., can solve the problems of poor stability of Pt-based low-carbon alkane dehydrogenation catalysts, etc., and achieve high dehydrogenation product selection. The effect of sexual and performance stability

Pending Publication Date: 2022-08-02
CHINA PETROLEUM & CHEM CORP +1
View PDF4 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to overcome the poor stability of Pt-based low-carbon alkane dehydrogenation catalysts in the prior art, and provide a low-carbon alkane dehydrogenation catalyst and its preparation method and application. The catalyst is used for low-carbon alkane dehydrogenation Hydrogen reaction has better conversion, selectivity and stability

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Low-carbon alkane dehydrogenation catalyst as well as preparation method and application thereof
  • Low-carbon alkane dehydrogenation catalyst as well as preparation method and application thereof
  • Low-carbon alkane dehydrogenation catalyst as well as preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0049] A second aspect of the present invention provides a method for preparing a low-carbon alkane dehydrogenation catalyst, the method comprising the following steps:

[0050] (1) oxidizing carbon nanotubes with an acid solution, followed by washing and first drying to obtain a carbon nanotube carrier;

[0051] (2) The carbon nanotube support in step (1) is first impregnated with a solution containing an indium compound, and then subjected to a second impregnation with a solution containing a platinum compound, and then subjected to a second drying and reduction treatment.

[0052] The preparation method of the second aspect of the present invention can be used to prepare the low-carbon alkane dehydrogenation catalyst of the first aspect, and the definitions for the raw material carbon nanotubes are the same, which will not be repeated here.

[0053] In the present invention, step (1) is used to treat the carbon nanotubes to facilitate the loading of the platinum component a...

Embodiment 1

[0069] (1) Preparation of multi-walled carbon nanotube carrier

[0070] Take 2.5g of multi-walled carbon nanotubes (purity > 98wt.%, ash 3 After immersion and oxidation treatment at 140 °C for 14 h, the solids were washed with deionized water and dried in air at 110 °C for 12 h to obtain multi-walled carbon nanotube-supported CNTs.

[0071] (2) Preparation of catalyst

[0072] Take 0.3 g of the multi-walled carbon nanotube carrier CNTs prepared in step (1), 3 mL of an ethanol solution of indium nitrate with a concentration of 3 mg / mL in In, and 3 mL of absolute ethanol in a 50 mL beaker, and after stirring at 25 °C for 0.5 h, Ultrasonic treatment was performed at 25 °C for 3 h, and then stirred for 0.5 h; then 3 mL of an ethanol solution of chloroplatinic acid with a concentration of 5 mg / mL in terms of Pt was added, and the mixture was stirred at 100 °C for 20 min. Then dried at 110 °C for 24 h, at 580 °C in H 2 Reduction in 1h to obtain catalyst C1.

Embodiment 2

[0074] The catalyst was prepared according to the method of Example 1, except that in step (2), the ethanol solution of chloroplatinic acid with a concentration of 1 mg / mL in terms of Pt was used to prepare catalyst C2.

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

PropertyMeasurementUnit
Apertureaaaaaaaaaa
Specific surface areaaaaaaaaaaa
Total pore volumeaaaaaaaaaa
Login to View More

Abstract

The invention relates to the field of low-carbon alkane dehydrogenation, and discloses a low-carbon alkane dehydrogenation catalyst as well as a preparation method and application thereof. The catalyst comprises a carbon nanotube, a platinum component and an indium component, wherein the platinum component and the indium component are loaded on the carbon nanotube; wherein on the basis of the total weight of the low-carbon alkane dehydrogenation catalyst, the content of the carbon nano tube is 85-98 wt%, the content of the platinum component is 1-10 wt% in terms of platinum element, the content of the indium component is 1-5 wt% in terms of indium element, and at least part of the indium component is located in the tube of the carbon nano tube. The catalyst provided by the invention has good conversion rate, selectivity and stability when being used in a low-carbon alkane dehydrogenation reaction.

Description

technical field [0001] The invention relates to the field of low-carbon alkane dehydrogenation, in particular to a low-carbon alkane dehydrogenation catalyst, a preparation method and application thereof, and more particularly to a low-carbon alkane dehydrogenation catalyst with carbon nanotubes as a carrier, a preparation method and application thereof. Background technique [0002] Pt-based catalysts are one of the commonly used catalysts for propane dehydrogenation. Propane dehydrogenation is a reversible reaction with strong endotherm and increase in molecular number. High temperature and low pressure are conducive to the dehydrogenation reaction. The usual reaction temperature is about 600 °C. Higher reaction temperature leads to propane cracking and propane deep dehydrogenation. , which reduces the propylene selectivity, and also aggravates the carbon on the surface of the catalyst, which leads to the deactivation of the catalyst. [0003] In recent years, carbon nano...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
IPC IPC(8): B01J23/62B01J35/10B01J37/02C07C5/333C07C11/06
CPCB01J23/62B01J37/0207B01J37/024C07C5/3337B01J35/615B01J35/635B01J35/633B01J35/647C07C11/06
Inventor 刘杰荣峻峰宗明生谢婧新
Owner CHINA PETROLEUM & CHEM CORP
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com